Shock absorber for vehicles



Jam. M35, R933@ H. HME

sHocK ABsoRBER FOR VEHICLES Filed Jan. 9, 1931 2 Sheets-Sham 2 Inventor:

r i y 5 of Fig. 2.

lafeafed Jaa-10, 1933 UNITED smfrl-:su PA'ri-:rrrA oi-*i-*lcE HUGO nME, or ESSEN-Bunn; GERMANY snocx AnsonBEn non VEHICLES lApplication led Jlanu'ary 9, 1931, Serial Nol li have'iled application for patent in Germany on November 17th, 1930, No. 63 c. H. 2519-30. Y

rlhe invention relates to a shock 'absorber 5 using a suitable liquid as the shock absorbing medium.' rlhe known shock absorbers of this type have the disadvantagethat they are iol between the chassis and the ax el one on,v each side of the body, `that when one of the sides 20 Vof the vehicle is depressed, the otheris also depressedl to the same, amount.

Two constructional forms of the invention are shown in the drawings, in vwhich Fig. 1 shows in diagram the device adapted to thegrear axle of a motor car; y

Figi". 2 shows' a preferred constructional form of the .invention partly in section;

` Fig. 3 is a. plan vlew corresponding to Fi 2; g

4-4 of Fig. 2; j

Fig. 5 is .a section accordingto the line A shock absorbing'cylinder b is mounted rigidly on one side ,of the car-chassis as and another one con the other side of the chassis.

A piston d is movably mounted in eaehof the cylinders b and o, the `iston of each of these cylinders beinglarticu ated to theA car axle e.

4 The lower end of the cylinder b is connected with the upper end of the cylinder c by means of a pipe f and the lower end of the cylinder c is similarly connected with the top of the cylinder b by means of a pipe g. A throttling organ, for instance a valve k (Fig. 5)A may be provided in each of the pipes f and g, which enables'l the ow. of the iquid shock* absorbing medium to be automatically throttled as desired.

' f5@ If the car body is for instance depressed or ig.,4 is a section according to the line 507,610, and in Germany mwemhei` 17.1930.. l

lowered on the right-side by reason of a one sided loading of the car, then' the chassis tends to v'drop' on this side, and with "it also the cylinder 0.- By reason of 4thisa certain amount of the liquid medium lis forced out of the top chamber of the cylindero which" flows through the pipe f into the bottom i chamber of the cylinder b whilst simultaneously the liquid medium lows from the top chamber of the cylinderfb through the pipe @9' g into the lower chamber of the cylinder 0'; consequently the other side, in this case the left hand side, is depressed to the same extent. ',The car body'is therefore, whilst at the same time absorbing the forces occurring, prevented to assume an inclined position in relation tothe car axle e and vice versa the car axle `e is prevented from assuming an oblique position in respect tothe body. The

centrifugal force, acting on the car body when the car negotiates a curve, is absorbed in the same way, so that any possibility of the off side wheels leaving thefroad is ab'- f solutely eliminated. f

As is self. evident, both shock absorbers 75 act,'when shocks acting in a vertical direction upon the axle of the car body occur, in exactly the same manner-as the usual shock absorbers. f f

In the constructional form shown in Figs. 2 to 5, each of the cylinders b and c is replaced l' by a casing z' which comprises two cylinders 1 and 2 in a V-shaped disposition. ln the upper, part of' the casing z' adouble-a'rmed le erzc Iis mounted solas to rock, the arms 85 o which rest vupon the piston d1 and d2 re-- spectively. TOn the outside of the ceasing z', a

lever m is lixed' to the Jaxis' of the lever 1; the ball-shaped end ofthe said lever m is elastically 'attached to a rod n, the lower end ,99 of whichis linked to the axle f the vehicle. The cylinder l is provided with a lateral portion h, the hollow space 3 v(Fig. 5) of -which encloses atbe p into which a valve pistono is disposed so as tomove axially; the tubep is provided with perforations or apertures p1 and'gpz. The valve piston is hollow .and closed on one end; its side Wallis/like-A wise provided with perforations o1 adapted to cover; with some1 of thefperforations 'ph The apertures p1 are adapted to oe uncovered by the raising piston 0, acted upon by a compression spring r, which tends to hold it in the position shown in Fig. 5. A tube f is branched upon the portion L, connecting the cylinder l and the space 3 to the cylinder i2 of the casing z' provided on the other side of the vehicle.

The other cylinder 2 is provided with a stud h1 connected by the pipe g to the lateral portion h of the cylinder l provided on the other side 'of the vehicle, which portion 71, again contains a piston valve 0, p.

The shock absorber according to Figs. 2 to 5 acts in the same manner as the above described one. If the car body is lowered on one side, then the chassis tends to drop on this side and with it the casing z', so that the piston d1 is lowered by the yoscillating movement of the levers 7c and m. The liquid is therefore forced out of the cylinder 1; it escapes by the hollow space i3 (F ig. 5) rais* ing the valve piston o against the action of its spring 1f, so that the apertures p1 get free. Tile liquid passes through the apertures p1 and the pipe f to the cylinder 2 provided on the other side of the vehicle. The liquid arriving in the cylinder '52 raises the pistonl cl2, thus forcing down the lever 7c likewise provided on the other side of the vehicle and causing the liquid to escape from the cylinder l of this side and to pass through the pipe g to the cylinder 2 shown in Fig. 2 of the drawings. The other side of the vehicle is .thus forced down by the downward inlovement of the levers 7c and m.

rlhe return of the liquid caused by the action of the vehicle spring shuts the valves 0, p so as to occupy their position shown in Fig. 5. rEhe liquid in this position of the valves is thrcttled by the apertures p1 and the return is operated slowly without any shock..

claim:

l. in a liquid sheet7 absorber for vehicles: a easing comprisin two liquid cylinders on each of 'the sides of the vehicle; a piston for each of said cylinders; a double-armed lever mounted in said casing; lever mounted on he anis of said double-armed lever acting to electively operate said pistons upon movement in opposite directions; means for mounting said casings and levers between the axle of the vehicle and the chassis; and means for connect-ing hydraulically oppositely actn ing cylinders on opposite sides of the vehicle.

2. .n a liquid shoclr absorber for vehicles: a casing comprising two liquid cylinders on each of the sides of the vehicle; a piston for each of said cylinders; a double-armed lever mounted in said casing; a lever mounted on the ais of said doublearmed lever acting to selectively operate said pistons upon movement in opposite directions; means for mounting said casings and levers betweenthe axle of the vehicle and the chassis; means Leeaece for connecting hydraulically oppositely acting cylinders on opposite sides of the vehicle, and means for automatically throttling the liquid on its return, provided in each of the said hydraulic connections.

3. In a liquid shock absorber for vehicles: a casing comprising two liquid cylinders on each of the sides of the vehicle; a piston for each of said cylinders; a double-armed lever mounted in said casing; a lever mounted on the axis of said double-armed lever acting to selectively operate said pistons upon movement in opposite directions; means ior mounting said casings and levers between the axle of the vehicle and the chassis; means for connecting hydraulically oppositely acting cylinders on opposite sides oi the vehicle; throttling ports provided in each of said hydraulic connections; additional ports adapted to be uncovered by a valve piston; and means for holding said valve piston in a closed position1 HUGO HME. 

